43540403115 has 32 divisors (see below), whose sum is σ = 79302053376. Its totient is φ = 20192648960.

The previous prime is 43540403113. The next prime is 43540403129. The reversal of 43540403115 is 51130404534.

It is not a de Polignac number, because 43540403115 - 2¹ = 43540403113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43540403113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5732754 + ... + 5740343.

It is an arithmetic number, because the mean of its divisors is an integer number (2478189168).

Almost surely, 2^43540403115 is an apocalyptic number.

43540403115 is a deficient number, since it is larger than the sum of its proper divisors (35761650261).

43540403115 is a wasteful number, since it uses less digits than its factorization.

43540403115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11473139.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 43540403115 its reverse (51130404534), we get a palindrome (94670807649).

The spelling of 43540403115 in words is "forty-three billion, five hundred forty million, four hundred three thousand, one hundred fifteen".